Quick search Find article
Quick search
Find article

Effects of differential mobility on biased diffusion of two species

R S Hipolito, R K P Zia and B Schmittmann

Show affiliations


Using simulations and a simple mean-field theory, we investigate jamming transitions in a two-species lattice gas under non-equilibrium steady-state conditions. The two types of particles diffuse with different mobilities on a square lattice, subject to an excluded volume constraint and biased in opposite directions. Varying filling fraction, differential mobility and drive, we map out the phase diagram, identifying first order and continuous transitions between a free-flowing disordered and a spatially inhomogeneous jammed phase. Ordered structures are observed to drift, with a characteristic velocity, in the direction of the more mobile species.


PACS

05.50.+q Lattice theory and statistics (Ising, Potts, etc.)

05.70.Fh Phase transitions: general studies

05.60.-k Transport processes

05.70.Ln Nonequilibrium and irreversible thermodynamics

MSC

82C26 Dynamic and nonequilibrium phase transitions (general)

82C20 Dynamic lattice systems (kinetic Ising, etc.) and systems on graphs

Subjects

Statistical physics and nonlinear systems

Dates

Issue 18 (9 May 2003)

Received 13 February 2003

Published 23 April 2003



View by subject




Export








Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.